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| Preamplifiers | | Manufacturer | Model# | Model Year | | Channels | Weight | Details | | | Audio Research | Reference AE | 2010 | | - | - | class A triode, 6H30 | - |
| Audio Research | SP-17 | 2008 | | - | 13 LBS | 6 INPUTS, PHONO, 13 LBS | - |
| Audio Research | REF PHONO 2 | 2008 | | - | 27 LBS | PHONO PRE, 27 LBS | - |
| Audio Research | REFERENCE 5 | 2008 | | - | 30 LBS | 7 INPUTS, 6H30P, 30 LBS | - |
| Audio Research | LS-26 | 2006 | | - | 17 LBS | 8 INPUTS, 17 LBS | - |
| Audio Research | LS-17 | 2006 | | - | 13 LBS | 7 INPUTS, 13 LBS | - |
| Audio Research | SP-17L | 2006 | | - | 13 LBS | LINESTAGE, 13 LBS | - |
| Audio Research | PH-7 | 2006 | | - | 15 LBS | PHONO PRE, 15 LBS | - |
| Audio Research | REFERENCE 3 | 2005 | | - | 48 LBS | REMOTE, 48 LBS | - |
| Audio Research | PH-5 | 2005 | | - | 11 LBS | PHONO PRE, 11 LBS | - |
| Audio Research | SP-16L | 2003 | | 7 Channels | 13 LBS | 12AX7EH, 13 LBS | Pricing History |
| Audio Research | REFERENCE PHONO | 2001 | | - | 28 LBS | PHONO STAGE, SE IN-OUT, 28 LBS | - |
| Audio Research | LS-25 MKII | 2001 | | - | - | WITH REMOTE, BAL AND SE INPUTS | - |
| Audio Research | LS-16 MKII | 2001 | | - | - | LINESTAGE | - |
| Audio Research | SP-16 | 2001 | | 7 Channels | 18 LBS | 6-12AX7, 18 LBS | Pricing History |
| Audio Research | REFERENCE 2 MKII | 2001 | | - | - | WITH REMOTE, BAL AND SE INPUTS | - |
| Audio Research | LS-16 | 2000 | | - | 20 LBS | 20 LBS | - |
| Audio Research | REFERENCE 2 | 2000 | | - | 50 LBS | 11 TUBES, 6922, 50 LBS | - |
| Audio Research | SP-3C | 2000 | | - | - | UPDATED SP-3 | - |
| Audio Research | LS-12 | 2000 | | - | - | WITH LINESTAGE, WITH REMOTE, 2 BAL IN | - |
| Audio Research | LS-8 MKII | 1999 | | - | 25 LBS | 5 SE INPUTS, 25 LBS | - |
| Audio Research | LS-25 | 1998 | | - | 25 LBS | REMOTE, 25 LBS | - |
| Audio Research | PH-3 SE | 1998 | | - | - | TUBE PHONO, SE INPUTS & OTPTS | - |
| Audio Research | LS-8 | 1998 | | - | - | SE INPUTS AND OUTPUTS | - |
| Audio Research | LS-10 | 1996 | | - | - | 6 INPUTS | - |
| Audio Research | REFERENCE 1 | 1996 | | - | 35 LBS | TUBE LINE STAGE, REM, 35 LBS | - |
| Audio Research | LS-5 MKIII | 1996 | | - | - | LINE STAGE, TUBE, BALANCED I/O | - |
| Audio Research | PH-3 | 1996 | | - | - | TUBE PHONO, MM-MC INPUT | - |
| Audio Research | LS-22 | 1996 | | - | 26 LBS | LINE STAGE, BAL AND SE I/O, REMOTE, 26 LBS | - |
| Audio Research | LS-15 | 1996 | | - | 20 LBS | LINE STAGE, REMOTE, 20 LBS | - |
| Audio Research | LS-9 | 1996 | | - | - | SE AND BALANCED I/O, REMOTE | - |
| Audio Research | LS-7 | 1995 | | - | - | LINE STAGE | - |
| Audio Research | LS-22R | 1995 | | - | - | WITH REMOTE | - |
| Audio Research | LS-2R MKII | 1994 | | - | 28 LBS | BAL OUT, REMOTE, 28 LBS | - |
| Audio Research | SP-9 MKIII | 1994 | | - | 16 LBS | HYBRID TUBE, PHONO, 16 LBS | - |
| Audio Research | SP-9R MKIII | 1994 | | - | - | HYBRID TUBE, PHONO, REMORE | - |
| Audio Research | LS-3BR | 1994 | | - | - | LINE STAGE, REMOTE | - |
| Audio Research | LS-2R | 1994 | | - | - | STEREO HYBRID, REMOTE | - |
| Audio Research | LS-3R | 1994 | | - | - | LINE STAGE, REMOTE | - |
| Audio Research | LS-5 MKII | 1994 | | - | - | LINE STAGE, TUBE, BALANCED I/O | - |
| Audio Research | LS-5R | 1994 | | - | - | LINE STAGE, TUBE, BAL, REMOTE | - |
| Audio Research | LS-2 MKII | 1994 | | - | - | LINE STAGE, BALANCED OUTPUTS | - |
| Audio Research | LS-2B MKII | 1994 | | - | - | LINE STAGE, BALANCED I/O | - |
| Audio Research | LS-2BR MKII | 1994 | | - | - | LINE STAGE, BALANCED I/O, REMOTE | - |
| Audio Research | LS-2BR | 1994 | | - | - | LINE STAGE, REMOTE | - |
| Audio Research | LS-5 | 1993 | | - | 29 LBS | LINE STAGE, BAL I/O, 29 LBS | - |
| Audio Research | LS-2B | 1992 | | - | 30 LBS | HYBRID, BAL IN, 30 LBS | - |
| Audio Research | LS-3 | 1992 | | - | 19 LBS | LINE, 19 LBS | - |
| Audio Research | PH-2 | 1992 | | - | - | TUBE PHONO STAGE, BAL IN-OUT | - |
| Audio Research | LS-3B | 1992 | | - | 40 LBS | BAL OUT, 40 LBS | - |
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